Question

calculati 5/6+1/9. b. 2/3+(-1/4) c. -5/12+ -3/16

Answer 1

$\frac{5}{6} + \frac{1}{9} = \frac{5*3}{6*3} + \frac{1*2}{9*2} = \frac{15}{18} + \frac{2}{18} = \frac{17}{18}$
$\frac{2}{3} +(- \frac{1}{4} )= \frac{8}{12} - \frac{3}{12} = \frac{5}{12}$
$- \frac{5}{12} + (- \frac{3}{16} )= - \frac{20}{45} +(- \frac{9}{48} )=- \frac{20+9}{45} =- \frac{29}{45}$